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<?php |
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namespace Wechat\API; |
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use Wechat\Api; |
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use Wechat\Utils\Code\WXBizMsgCrypt; |
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/** |
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* 微信接收回调相关接口. |
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* |
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* @author Tian. |
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*/ |
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class ServerApi extends BaseApi |
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{ |
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private static $XML_OBJECT; |
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/** |
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* 监听 |
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* |
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* @param string $target |
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* @param string|callable $event |
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* @param callable $callback |
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* |
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* @return bool Server |
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*/ |
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public function on($target, $event, $callback = null) |
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{ |
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$echostr = isset($_GET['echostr']) ? $_GET['echostr'] : null; |
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$checkSignature = $this->checkSignature(); |
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if (!$checkSignature) { |
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exit("签名验证失败"); |
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} |
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if (!empty($echostr)) { |
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echo $echostr; |
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exit; |
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} |
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if (is_null($callback)) { |
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$callback = $event; |
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$event = '*'; |
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} |
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if (!is_callable($callback)) { |
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exit("$callback 不是一个可调用的函数或方法"); |
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} |
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$rest = $this->$target($event); |
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$datas = []; |
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$datas['data'] = $rest; |
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if (!empty($rest)) { |
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$rest_user = []; |
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$rest_user['ToUserName'] = $rest['FromUserName']; |
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$rest_user['FromUserName'] = $rest['ToUserName']; |
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$rest_msg = call_user_func_array($callback, $datas); |
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if ($rest_msg == 'success') { |
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exit('success'); |
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} |
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$rest_array = array_merge($rest_user, $rest_msg); |
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$rest_xml = $this->arrayToXml($rest_array); |
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$msg_signature = isset($_GET['msg_signature']) ? $_GET['msg_signature'] : null; |
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if (!empty($msg_signature) && $msg_signature != '') { |
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$rest_xml = $this->encryptMsg($rest_xml); |
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} |
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exit($rest_xml); |
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} else { |
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return false; |
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} |
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} |
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/** |
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* 验证签名 |
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* |
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* string $signature [签名] |
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* int $timestamp [时间戳] |
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* string $nonce [随机字符串] |
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* |
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* @param string $token [token] |
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* |
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* @return mixed|bool |
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*/ |
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public function checkSignature($token = null) |
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{ |
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$config_token = Api::getToken(); |
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$signature = isset($_GET['signature']) ? $_GET['signature'] : null; |
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$timestamp = isset($_GET['timestamp']) ? $_GET['timestamp'] : null; |
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$nonce = isset($_GET['nonce']) ? $_GET['nonce'] : null; |
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$token = empty($token) ? $config_token : $token; |
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$tmpArr = [$token, $timestamp, $nonce]; |
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sort($tmpArr, SORT_STRING); |
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$tmpStr = implode($tmpArr); |
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$tmpStr = sha1($tmpStr); |
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if ($tmpStr == $signature && $signature != null) { |
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return $this; |
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} |
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return false; |
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} |
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/** |
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* 生成签名 - 用作 转发到第三方 |
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* |
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* @param string $token |
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* @param string $time |
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* @param string $nonce |
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* |
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* @return bool|string |
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*/ |
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public function makeSignature($token = null, $time = null, $nonce = null) |
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{ |
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if (!is_string($token) || empty($token)) { |
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exit("$token 参数错误"); |
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} |
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$timestamp = !empty($time) ? $time : $_GET['timestamp']; |
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$nonce = !empty($nonce) ? $nonce : $_GET['nonce']; |
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$tmpArr = [$token, $timestamp, $nonce]; |
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sort($tmpArr, SORT_STRING); |
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$tmpStr = implode($tmpArr); |
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$tmpStr = sha1($tmpStr); |
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return $tmpStr; |
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} |
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/** |
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* 推送到第三方 |
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* |
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* @param string $url [地址] |
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* @param string $token [token] |
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* @param string $xml [XML] |
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* @param bool $encipher [是否加密] |
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* |
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* @return array|bool XML |
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*/ |
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public function receiveAgent($url = '', $token = '', $xml = '', $encipher = false) |
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{ |
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$object = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA); |
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$object = json_decode(json_encode($object), true); |
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if (isset($object['Encrypt']) && !empty($object['Encrypt']) && $object['Encrypt'] != '') { |
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$xml = $this->decryptMsg($xml); |
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} |
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if ($encipher) { |
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$xml = $this->encryptMsg($xml); |
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$object_enc = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA); |
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$object_enc = json_decode(json_encode($object_enc), true); |
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$postQueryStr = []; |
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$postQueryStr['timestamp'] = $object_enc['TimeStamp']; |
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$postQueryStr['nonce'] = $object_enc['Nonce']; |
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$postQueryStr['signature'] = $this->makeSignature($token, $postQueryStr['timestamp'], $postQueryStr['nonce']); |
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$postQueryStr['msg_signature'] = $object_enc['MsgSignature']; |
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$array = []; |
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$array['ToUserName'] = $object['ToUserName']; |
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$array['Encrypt'] = $object_enc['Encrypt']; |
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$xml = $this->arrayToXml($array); |
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} else { |
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$postQueryStr['timestamp'] = time(); |
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$postQueryStr['nonce'] = $this->getRandomStr(); |
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$postQueryStr['signature'] = $this->makeSignature($token, $postQueryStr['timestamp'], $postQueryStr['nonce']); |
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} |
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asort($postQueryStr); |
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$postQueryStr = http_build_query($postQueryStr); |
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$rest = $this->https_xml($url . '?' . $postQueryStr, $xml); |
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if ($rest) { |
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$object_rest = simplexml_load_string($rest, 'SimpleXMLElement', LIBXML_NOCDATA); |
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$object_rest = json_decode(json_encode($object_rest), true); |
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if (!empty($object_rest['MsgSignature']) && !empty($object_rest['TimeStamp']) && !empty($object_rest['Nonce']) && !empty($object_rest['Encrypt'])) { |
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$rest = $this->decryptMsg($rest, $object_rest['MsgSignature'], $object_rest['TimeStamp'], $object_rest['Nonce']); |
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} |
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$object_rest = simplexml_load_string($rest, 'SimpleXMLElement', LIBXML_NOCDATA); |
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$rest_array = json_decode(json_encode($object_rest), true); |
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return $rest_array; |
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} |
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return false; |
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} |
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/** |
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* 加密XML |
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* |
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* @param $xml |
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* |
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* @return string |
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*/ |
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public function encryptMsg($xml) |
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{ |
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$appId = Api::getAppId(); |
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$token = Api::getToken(); |
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$encodingAesKey = Api::getEncoding_Aes_Key(); |
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if (empty($token) || !$token || empty($encodingAesKey) || !$encodingAesKey) { |
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return $xml; |
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} |
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$timeStamp = time(); |
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$nonce = $this->getRandomStr(); |
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$pc = new WXBizMsgCrypt($token, $encodingAesKey, $appId); |
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$encryptMsg = ''; |
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$errCode = $pc->encryptMsg($xml, $timeStamp, $nonce, $encryptMsg); |
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if ($errCode == 0) { |
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return $encryptMsg; |
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} else { |
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exit($errCode); |
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} |
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} |
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/** |
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* 解密XML |
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* |
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* @param $xml |
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* @param null $msg_signature |
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* @param null $timeStamp |
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* @param null $nonce |
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* |
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* @return string |
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*/ |
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public function decryptMsg($xml, $msg_signature = null, $timeStamp = null, $nonce = null) |
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{ |
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$appId = Api::getAppId(); |
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$token = Api::getToken(); |
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$encodingAesKey = Api::getEncoding_Aes_Key(); |
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$msg_signature = !empty($msg_signature) ? $msg_signature : $_GET['msg_signature']; |
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$timeStamp = !empty($timeStamp) ? $timeStamp : $_GET['timestamp']; |
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$nonce = !empty($nonce) ? $nonce : $_GET['nonce']; |
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$pc = new WXBizMsgCrypt($token, $encodingAesKey, $appId); |
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$msg = ''; |
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$errCode = $pc->decryptMsg($msg_signature, $timeStamp, $nonce, $xml, $msg); |
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if ($errCode == 0) { |
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return $msg; |
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} else { |
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exit($errCode); |
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} |
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} |
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/** |
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* 魔术方法 处理 返回结果 |
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* |
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* @param string $target [事件] |
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* @param $event |
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* |
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* @return string $event [类型] |
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* @return array $xml [xml] |
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*/ |
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public function __call($target, $event) |
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{ |
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$object = self::$XML_OBJECT; |
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if (!$object || !is_object($object) || empty($object)) { |
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$xml = file_get_contents('php://input'); |
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$msg_signature = isset($_GET['msg_signature']) ? $_GET['msg_signature'] : null; |
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if (!empty($msg_signature) && $msg_signature != '') { |
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$xml = $this->decryptMsg($xml); |
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} |
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$object = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA); |
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self::$XML_OBJECT = $object; |
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} |
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284
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$target = strtolower(trim($target)); |
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286
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$event = strtolower(trim(reset($event))); |
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288
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$rx_target = strtolower(trim($object->MsgType)); |
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$rx_event = strtolower(trim($object->Event)); |
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291
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if ($target == $rx_target) { |
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if ($event == '*') { |
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$array = json_decode(json_encode($object), true); |
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} elseif ($event == $rx_event) { |
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$array = json_decode(json_encode($object), true); |
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} else { |
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$array = false; |
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} |
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} else { |
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$array = false; |
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} |
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return $array; |
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} |
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/** |
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* array转xml. |
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* |
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* @param array $arr |
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* @param bool $flag |
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* @param bool $especial |
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* |
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* @return string |
314
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*/ |
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public function arrayToXml($arr = [], $flag = true, $especial = false) |
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{ |
317
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if ($flag) { |
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$xml = '<xml>'; |
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} else { |
320
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$xml = ''; |
321
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} |
322
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323
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foreach ($arr as $key => $val) { |
324
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if (is_numeric($val)) { |
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$xml .= '<' . $key . '>' . $val . '</' . $key . '>'; |
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} elseif (is_array($val)) { |
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if (strtolower($key) == 'item') { |
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$xml .= $this->arrayToXml($val, false, true); |
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} elseif ($especial == true) { |
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$xml .= '<item>'; |
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$xml .= $this->arrayToXml($val, false, true); |
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$xml .= '</item>'; |
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} else { |
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$xml .= !is_numeric($key) ? '<' . ucfirst($key) . '>' : ''; |
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$xml .= $this->arrayToXml($val, false); |
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$xml .= !is_numeric($key) ? '</' . ucfirst($key) . '>' : ''; |
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} |
338
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} else { |
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$xml .= '<' . $key . '><![CDATA[' . $val . ']]></' . $key . '>'; |
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} |
341
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} |
342
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343
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if ($flag) { |
344
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$xml .= '</xml>'; |
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} |
346
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347
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return $xml; |
348
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} |
349
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350
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public function getXmlObject() |
351
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{ |
352
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return self::$XML_OBJECT; |
353
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} |
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355
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/** |
356
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* 第三方 post 推送 |
357
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|
|
* |
358
|
|
|
* @param $url |
359
|
|
|
* @param null $xml |
360
|
|
|
* |
361
|
|
|
* @return mixed |
362
|
|
|
*/ |
363
|
|
|
public function https_xml($url, $xml = null) |
364
|
|
|
{ |
365
|
|
|
$ch = curl_init($url); |
366
|
|
|
curl_setopt($ch, CURLOPT_URL, $url); |
367
|
|
|
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); |
368
|
|
|
//curl_setopt($ch, CURLOPT_HTTPHEADER, $header); |
|
|
|
|
369
|
|
|
curl_setopt($ch, CURLOPT_POST, 1); |
370
|
|
|
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml); |
371
|
|
|
$response = curl_exec($ch); |
372
|
|
|
if (curl_errno($ch)) { |
373
|
|
|
print curl_error($ch); |
374
|
|
|
} |
375
|
|
|
curl_close($ch); |
376
|
|
|
|
377
|
|
|
return $response; |
378
|
|
|
} |
379
|
|
|
|
380
|
|
|
/** |
381
|
|
|
* 随机生成16位字符串 |
382
|
|
|
* |
383
|
|
|
* @return string 生成的字符串 |
384
|
|
|
*/ |
385
|
|
View Code Duplication |
public function getRandomStr() |
|
|
|
|
386
|
|
|
{ |
387
|
|
|
$str = ""; |
388
|
|
|
$str_pol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz"; |
389
|
|
|
$max = strlen($str_pol) - 1; |
390
|
|
|
for ($i = 0; $i < 16; $i++) { |
391
|
|
|
$str .= $str_pol[mt_rand(0, $max)]; |
392
|
|
|
} |
393
|
|
|
|
394
|
|
|
return $str; |
395
|
|
|
} |
396
|
|
|
} |
Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: